Hi Henrik, indeed a long list - first of all just to mention, the iSUPS in general are mainly made for flat water, but you can ride a few waves with them, just the rounded rails of course make it more tricky - given you want to use it for a bit of wave use and mainly for the kids, I would say get the Fly Air 10'4" - you can buy a Drift Stopper from Arrows with a kids rig or an irig, this helps to stay upwind for the kids. Stubby Air is one of my favourites, but it´s too small to teach kids on/play around in light air/you may need more volume with 92kgs. The Ripper Air is great for kids to play on in the waves or paddle, but not for windsurfing (has no insert), shape is too short/small for winsurfing and it´s for sure too small for you in terms of volume/width etc too.
So I would go for the Fly Air Premium 10'4" - stiff, WS option, 3 fins for a bit of wave performance, big enough to learn a bit of windsurfing (get the drift stoppers) etc..good luck!